Gather Statistics of tables in R12

Can any help to restore the gather statics of tables in R12

Issue with the Gather Table Statistics in E-Business Suite R12

we have done below steps to improve performance of concurrent program . After performing below steps concurrent program taking more time then previous time (taking one hours extra) to complete.

1. Alter table <table_name> move:

2. Rebuild the index relate to table

3. exec fnd_stats.gather_table_stats ('APPS','GL_LEDGERS',PERCENT=>99);

Below are the table used in concurrent program and steps performs on below tables.

GL_JE_CATEGORIES_TL

GL_JE_SOURCES_TL

GL_PERIODS

GL_PERIOD_STATUSES

GL_LEDGERS